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authorAlistair Francis2016-06-06 17:59:28 +0200
committerPeter Maydell2016-06-06 17:59:28 +0200
commit2a5a9abd4bc45e2f4c62c77e07aebe53608c6915 (patch)
treed11c778a1c0f5c565ea7522c42969e371bdb9954
parentMerge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging (diff)
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target-arm: Add the HSTR_EL2 register
Add the Hypervisor System Trap Register for EL2. This register is used early in the Linux boot and without it the kernel aborts with a "Synchronous Abort" error. Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Message-id: ea5aae4b10283de4705b864fe9d4bd2eaddaacae.1463174342.git.alistair.francis@xilinx.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--target-arm/cpu.h1
-rw-r--r--target-arm/helper.c7
2 files changed, 8 insertions, 0 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index c741b53ad4..afb60ee4f3 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -278,6 +278,7 @@ typedef struct CPUARMState {
uint64_t far_el[4];
};
uint64_t hpfar_el2;
+ uint64_t hstr_el2;
union { /* Translation result. */
struct {
uint64_t _unused_par_0;
diff --git a/target-arm/helper.c b/target-arm/helper.c
index e3ea26f8c8..9a6ff2e2ba 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -3471,6 +3471,9 @@ static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = {
.opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4,
.access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
.type = ARM_CP_CONST, .resetvalue = 0 },
+ { .name = "HSTR_EL2", .state = ARM_CP_STATE_BOTH,
+ .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 3,
+ .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
REGINFO_SENTINEL
};
@@ -3706,6 +3709,10 @@ static const ARMCPRegInfo el2_cp_reginfo[] = {
.opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4,
.access = PL2_RW,
.fieldoffset = offsetof(CPUARMState, cp15.hpfar_el2) },
+ { .name = "HSTR_EL2", .state = ARM_CP_STATE_BOTH,
+ .cp = 15, .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 3,
+ .access = PL2_RW,
+ .fieldoffset = offsetof(CPUARMState, cp15.hstr_el2) },
REGINFO_SENTINEL
};